Few possible problems. Most likely a loose input shaft nut. A new one torques to 110 ft/lbs along with fluid and filter changes every 10K miles should fix the issue.
Beats me
it will explode
It Gets hot
It makes the motor run insufficiently.
if your going over 2nd gear the gearbox will surely fall out
A manual transmission will become noisy, shift hard and eventually self destruct. An automatic will simply not pull the car.
You can blow a head gasket or the head can crack or be warped.
Depends upon the model of transmission. On some, it is no big deal, on others, the fluid will foam and possibly shoot out of the filler tube. Others, it will cause the transmission to slip and possible overheat.
The 700R4 is one member of the Turbo-Hydramatic series of automatic transmissions. They were made by General Motors. The function of a transmission is to change the gear ratios as a vehicle moves. In the case of an automatic transmission this happens automatically without the driver having to shift gears.
it gets dehydrated and probably overheats
If it is an automatic you'll thin out your transmission fluid and burn up your clutch packs and valve body if driven. If it's manual it can make your transmission run hotter and burn up your gears. You should flush it immediately.
My 2007 overheated and the engine shut down automatically - while I was driving